<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>面向对象封装消息提示</title>
  <style>
    .modal {
      width: 300px;
      min-height: 100px;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
      border-radius: 4px;
      position: fixed;
      z-index: 999;
      left: 50%;
      top: 50%;
      transform: translate3d(-50%, -50%, 0);
      background-color: #fff;
    }

    .modal .header {
      line-height: 40px;
      padding: 0 10px;
      position: relative;
      font-size: 20px;
    }

    .modal .header i {
      font-style: normal;
      color: #999;
      position: absolute;
      right: 15px;
      top: -2px;
      cursor: pointer;
    }

    .modal .body {
      text-align: center;
      padding: 10px;
    }

    .modal .footer {
      display: flex;
      justify-content: flex-end;
      padding: 10px;
    }

    .modal .footer a {
      padding: 3px 8px;
      background: #ccc;
      text-decoration: none;
      color: #fff;
      border-radius: 2px;
      margin-right: 10px;
      font-size: 14px;
    }

    .modal .footer a.submit {
      background-color: #369;
    }
  </style>
</head>

<body>
  <button id="delete">删除</button>
  <button id="login">登录</button>

  <!-- <div class="modal">
    <div class="header">温馨提示 <i>x</i></div>
    <div class="body">您没有删除权限操作</div>
  </div> -->


  <script>
    // 1.  模态框的构造函数
     function Modal(title,content){
      this.title=title
      this.content=content
      this.modalBox=document.createElement('div')
      this.modalBox.classList=('modal')
      this.modalBox.innerHTML=`
      <div class="header">${this.title} <i>x</i></div>
      <div class="body">${this.content}</div>`

      console.log(this.modalBox);
     }
    // 2. 打开方法 挂载 到 模态框的构造函数原型身上
   Modal.prototype.open=function(){
     if(!document.querySelector('.modal')){
      document.querySelector('body').appendChild(this.modalBox)
      const i= document.querySelector('.header i')
      i.addEventListener('click',()=>{
        this.close()
      })
     }
   }
    // 3. 关闭方法 挂载 到 模态框的构造函数原型身上
    Modal.prototype.close=function(){
      document.querySelector('body').removeChild(this.modalBox)
    }

    // 4. 按钮点击
     const login =document.querySelector('#login')
     login.addEventListener('click',function(){
     const mod= new  Modal('友情提示','你还没有注册账号')
     mod.open()
     })
    // 5. 按钮点击
    const del =document.querySelector('#delete')
    del.addEventListener('click',function(){
      const mod=  new  Modal('温馨提示','您没有删除权限操作')
      mod.open()
     })

  </script>
</body>

</html>